Giant Tunnel Borer Starts Excavation for Hudson River Rail Link

A 1,680-ton tunnel boring machine has begun excavating in North Bergen, New Jersey, initiating the Palisades Tunnel phase of the $16 billion Hudson Tunnel Project. This megaproject aims to alleviate congestion on the rail corridor between New Jersey and Manhattan, which currently depends on infrastructure from 1910.

The Machinery

The German-manufactured, US-assembled machine features an 8.7-meter cutting head and is 150 meters long. It fractures hard rock at a pace of approximately nine meters per day, while simultaneously installing prefabricated concrete segments to line the tunnel Source: Gizmodo. Two such machines will dig parallel galleries roughly 1.6 kilometers each, linked by six cross-passages Source: El Confidencial.

Strategic Context

The new tunnels address critical bottlenecks in the aging North River Tunnel, which handles over 450 daily trains and transports approximately 200,000 passengers Source: Clarin. Damage from Hurricane Sandy in 2012 worsened existing deterioration issues. The project's ultimate goal is to expand the corridor to four tracks, enabling rehabilitation of the old tunnels without interrupting service Source: Gizmodo.

Timeline and Next Steps

Excavation under the Palisades cliffs commenced in October 2026 Source: Clarin, following preparatory works that began in August 2024 Source: El Confidencial. Once the machines reach a shaft near Weehawken/Hoboken, they will be extracted. Specialized equipment will then excavate the section under the Hudson River to reach Manhattan. The new tunnels are scheduled to open in 2035 Source: Gizmodo.